/Engine/Source/Editor/BlueprintGraph/Classes/EdGraphSchema_K2.h
Reads in aFStringand gets the values of the pin defaults for that type. This can be passed to DefaultValueSimpleValidation to validate. OwningObject can be null
virtual void GetPinDefaultValuesFromString ( const [FEdGraphPinType](API\Runtime\Engine\EdGraph\FEdGraphPinType) & PinType, [UObject](API\Runtime\CoreUObject\UObject\UObject) * OwningObject, const [FString](API\Runtime\Core\Containers\FString) & NewValue, [FString](API\Runtime\Core\Containers\FString) & UseDefaultValue, [TObjectPtr](API\Runtime\Core\Delegates\TObjectPtr)< [UObject](API\Runtime\CoreUObject\UObject\UObject) > & UseDefaultObject, [FText](API\Runtime\Core\Internationalization\FText) & UseDefaultText, bool bPreserveTextIdentity ) const